In the midst of the Holy Grail War, where Masters and their Servants vie for the ultimate wish granter, Caster's actions spark a chain of events. By abducting Saber, Rin and Archer are forced to separate in order to fight their own battles. Without Saber by his side, Shirou's beliefs are put to the test, causing him to doubt his desire to protect others and become a hero. As he faces unexpected enemies and obstacles, Shirou's resolve gradually strengthens. However, he wonders if his aspirations are truly his own or simply a product of outside influence. Will Shirou's convictions carry him to the end of the war?